Etymograph

English

nidiform

Nidiform comes from New Latin nīdifōrmis ‘nidiform (nest-shaped)’, and goes back to Proto-Indo-European *sed- ‘to sit’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sed-1‘to sit’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*nisdós1‘nest’reconstructed
  3. Proto-Italicc. 1500–700 BCE*nizdos1‘nest’reconstructed
  4. Latinc. 75 BCE–200 CEnīdus1‘a nest’
  5. Latinc. 75 BCE–200 CEfōrma1
  6. New Latinc. 1500–1900nīdifōrmis2‘nidiform (nest-shaped)’
  7. Englishtodaynidiform2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin nidiformis
  2. 2 Wiktionary, English nidiform

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sed-Wiktionary, Latin nidiformis‘to sit’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*nisdósWiktionary, Latin nidiformis‘nest’reconstructed
  3. Proto-Italicc. 1500–700 BCE*nizdosWiktionary, Latin nidiformis‘nest’reconstructed
  4. Latinc. 75 BCE–200 CEnīdusWiktionary, Latin nidiformis‘a nest’
  5. Latinc. 75 BCE–200 CEfōrmaWiktionary, Latin nidiformis
  6. New Latinc. 1500–1900nīdifōrmisWiktionary, English nidiform‘nidiform (nest-shaped)’
  7. EnglishtodaynidiformWiktionary, English nidiform

Linked words

through Proto-Indo-European *sed- ‘to sit’

set, president, size, sell, sit, sitting, seat, method, session, chair, settle, resident, assess, possess, siege, saddle, exodus, sedan, reside, subsidy, residual, residue, sediment, sedentary, beset, prasad, cathode, soot, sedative, setter, insidious, obsess, anode, dissident, sedate, chaise, sate, sessile, seance, ersatz, 90 more

through Proto-Indo-European *nisdós ‘nest’

nest, 5 more

through Latin nīdus ‘a nest’

niche, nye, nias, nidal, 5 more

through Latin fōrma

information, formation, reform, formula, format, formal, inform, uniform, forma, fromage, deform, 24 more

Today it means

adj Shaped like a nest.

Sources

Sources: Wiktionary, “nidiform”; the older steps come from the Wiktionary entry for Latin nidiformis. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *sed- / nidiform

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